Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Ophthalmic and contact lens solutions with a peroxide source and a preservative

a technology of peroxide source and contact lens, which is applied in the field of ophthalmic solutions, can solve problems such as adverse reactions, and achieve the effect of increasing capacity and effective preservative capacity

Inactive Publication Date: 2007-05-03
FXS VENTURES LLC
View PDF99 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007] The present invention relates to ophthalmic solutions that are broad ranged and effective in low concentrations relative to state of the art systems. In particular it has been found that ophthalmic solutions comprising 0.00001 to abo

Problems solved by technology

Because of the intimate contact that such solutions have with corneal tissue, several problems or concerns are regularly presented.
Furthermore, prolonged contact with corneal tissue can lead to the accumulation of material on corneal tissue, or on devices in contact with the solution that then leads to adverse reactions.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ophthalmic and contact lens solutions with a peroxide source and a preservative
  • Ophthalmic and contact lens solutions with a peroxide source and a preservative
  • Ophthalmic and contact lens solutions with a peroxide source and a preservative

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0031] A set of aqueous solutions containing Pluronic F127 (0.1%) and glycerin (2%) was prepared the pH was adjusted to pH 7.65. Polyhexamethylene biguanide (PHMB) was added to half of this solution to yield a final concentration of 1 ppm. Another set of aqueous solutions containing hydrogen peroxide (60 ppm), Pluronic ® F127 (0.1%) and glycerin (2.3%) was prepared the pH was adjusted to pH 7.35. Polyhexamethylene biguanide (PHMB) was added to half of this solution to yield a final concentration of 1 ppm.

[0032] Each of these solutions were tested for their activity against S. aureus and C. albicans. The data are summarized in the following table.

Formulation4 hours4 hoursNo preservative0.05−0.09PHMB4.032.40Hydrogen peroxide1.951.06Hydrogen peroxide, PHMB>4.733.08Marketed Product 1*>4.730.54Marketed Product 2**>4.732.57

*marketed product 1 having the general composition: A sterile isotonic aqueous solution containing sodium chloride, polyoxyethylene polyoxypropylene block copolymer,...

example 2

PHMB—Peroxide

[0034] Formulations were prepared by dissolving L-histidine or Bis-Tris Propane in water. The pH of the solutions were adjusted to 7.3 with IN hydrochloric acid. Hydrogen peroxide, Dequest ® 2010 and polyhexamethylenebiguanide HCl (PHMB) were added to these solutions. The formulations were diluted to volume with water. Each of these solutions were tested for their activity against C. albicans (ATCC 10231) following a two hour exposure. The activity is expressed as a log reduction from the initial inoculum. The compositions, concentrations and activity of each of the solutions are summarized in the following table.

LogHydrogenDequestReductionPreservativeBufferPeroxide20101.59Bis-Tris Propanenonenone0.006%0.2%2.05Bis-Tris Propanenone0.006%0.006%0.2%1.25L-histdine 0.2%nonenone0.006%1.85L-histdine 0.2%none0.006%0.006%

[0035] The results demonstrate the improved antifungal efficacy of the polyhexamethylene biguanide—hydrogen peroxide combination against C. albicans.

example 3

PHMB

[0036] Formulations were prepared by dissolving L-histidine, Bis-Tris Propane, or Tricine in water. The pH of the solutions were adjusted to 7.3 with 1N hydrochloric acid. Glycerin, hydrogen peroxide, Dequest 2010 and polyhexamethylenebiguanide HCl (PHMB) were added to these solutions. The formulations were diluted to volume with water Each of these solutions were tested for their activity against C. albicans (ATCC 10231) following a two hour exposure. The activity is expressed as a log reduction from the initial inoculum. The compositions, concentrations and activity of each of the solutions are summarized in the following table.

LogHydrogenDequestReductionPreservativeBufferGlycerinPeroxide20101.60PHMB 0.0001%L-Histidine 0.2%nonenonenone2.38PHMB 0.0001%L-Histidine 0.2%none0.006%none1.27PHMB 0.0001%L-Histidine 0.2%nonenone0.006%2.25PHMB 0.0001%L-Histidine 0.2%none0.006%0.006%1.08PHMB 0.0001%L-Histidine 0.2%nonenone0.003%2.04PHMB 0.0001%L-Histidine 0.2%none0.006%0.003%1.57PHMB...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Fractionaaaaaaaaaa
Percent by massaaaaaaaaaa
Percent by massaaaaaaaaaa
Login to View More

Abstract

The present invention relates to an ophthalmic solution including 0.00001 to about 3.0 percent by weight of a peroxide producing agent and 0.1 to 500 parts per million of a preservative.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application claims the benefit of U.S. Provisional Patent Application Ser. Nos. 60 / 246,689, filed Nov. 8, 2000, 60 / 246,707, filed Nov. 8, 2000, 60 / 246,708, filed Nov. 8, 2000, and 60 / 246,709, filed Nov. 8, 2000; PCT Application Ser. No. US2001 / 0046882, filed Nov. 8, 2001, and U.S. patent application Ser. No. 10 / 544,149, filed Aug. 1, 2005.BACKGROUND [0002] This invention relates to ophthalmic solutions used to treat eyes, to deliver active pharmaceutical agents to eyes and to treat ophthalmic devices that in use directly contact corneal tissues. Ophthalmic solutions are used to regularly treat and condition eyes and articles and devices that are regularly used in eyes, such as contact lenses. Because of the intimate contact that such solutions have with corneal tissue, several problems or concerns are regularly presented. For instance, for solutions directly in contact with corneal tissue the compatibility of the solution with the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): A61K33/40
CPCA01N59/00A61K9/0048A61K31/17A61K31/19A61K31/327A61K33/40A61K45/06A61L12/086A61L12/124A61L12/142C11D3/0078C11D3/3723C11D3/3947A01N47/44A01N2300/00A61K2300/00
Inventor SMITH, FRANCIS X.
Owner FXS VENTURES LLC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com